Ventilator.



No. 856,020. PA TENTED JUNE 4, 1907.

W. BIGELOW- VENTILATOR.

APPLICATION FILED JULY a, 1906,

4 INVEI'NTOR UNITED STATES PATENT OFFICE.

WESLEY BIGELOW, OF NEW YORK, N. Y., ASSIGNOR or FORTY-NINE ONE- HUNDREDTHS' TO JOHN HADOOOK, OF NEW YORK, Y.

VENTILATOR- Specification of Letters Patent.

Patented June 4, 19071.

Application filed July 3, 1906. Serial No. 324,684.

.To all whom, it may concern.-

Be it known that I, WESLEY BIGELOW, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

My invention relates to improvements in ventilators especially adapted for windows.

One of the objects of my invention is to provide a ventilator which may be secured to the sash of a window in such a manner that the room may be thoroughly ventilated without drafts.

Another object is to provide such a ventilator that it may be used as a handle to raise or lower the window sash without disturbing the ventilator.

, Another object is to so construct the ventilator that certain parts may be easily removed for cleaning or other purposes, without disturbing the other parts.

Other objects will appear from the hereinafter description.

The invention is illustrated in the accompanying drawing, which forms part of this application, and in the different views of which the same reference character indicates the same part.

Referring to the drawings, Figure 1 is a front view of the lower part of a window sash with one of my ventilators secured to the lower rail of the sash and extending across the same. Fig. 2 shows two shorter ventilators secured near each end of said rail. Fig. 3 is a perspective View of the ventilator removed from the sash. Fig. 4 is a cross section of the ventilator showing the inner {tube turned to its full open position. Fig. 5 is a similar section showing the inner tube turned to close the ventilator. Fig. 6 is a cross section of a modified construction. top plan view of another modified construction. Fig. 8 is a cross section of said modification.

The part marked A on the drawing represents the window frame.

B is the sash and O the lower rail thereof. O represents an opening cut through this Fig. 7 1s alower rail through which the ventilator passes and is secured to the said rail.

D represents the ventilator, which consists of a rectangular member D which is inserted in the opening C of the lower rail of the sash, said opening being cut out of the rail to conform to the shape of said member. This member is provided with a flange d on its inner side which fits against the inner surface of the rail O. Formed integral with and secured on the inner end of this member is another member D preferably cylindrical in shape and forming an outer tube, as shown in the first five figures of the drawing. This tube is cut away at d on its upper surface. D is an inner tube which extends longitudinally of the outer tube from end to end thereof. This inner tube has a portion thereof cut away, as shown at (P. This cut away portion may be substantially the same length as the cut away portion d in the outer tube, as shown to the right in Fig. 3, or it may consist of a series of cut away portions (1 leaving a portion of the inner tube (Z between, as

shown to the left in Fig. 3. This inner tube is closed at each end and is so fitted into the outer tube that it may turn axially therein.

When the inner tube D is turned in one position, for example as shown in Fig. 4, there is communication through the member D, the inner tube D and the outer tube D through the openings (1 d to the room. lVhen the tube is turned in another direction, as shown in Fig. 5, so that the cut away portions of the inner and outer tubes do not register, the ventilator is closed, as shown in Fig. 5. Of course, it is to be understood that the inner tube may be turned to any degree from open to closed, so as to permit more or less air to pass through the openings d (1 into the room. The tubes are so constructed, of course, that air cannot pass out of the ends thereof. This can be accomplished by closingboth ends of the inner tube, as above stated, or by closing one end of the outer tube and the opposite end of the inner tube, which will accomplish the same purpose. On one end of the inner tube I secure a button or similar device D by which the inner tube may be turned. Secured to the sash rail over the opening C is a piece of wire netting E which acts as a screen to prevent dust or other material from passing into the ventilator.

F is a plate or escutcheon secured over the edges of the screen as a finish.

When the ventilator is made of extra length as shown in Figs. 1 and 3 of the drawing, the slot or opening d does not extend the full length thereof, but I prefer to provide two slots as there shown, leaving a portion of the tube in the middle slot throughout. When I use a short tube, however, as shown in Fig. 2, this slot may extend throughout the length of the outer tube. In this construction, it is to be seen that the ends of the ventilator are closed and all the air entering the room must pass out through the cut away portion d of the outer tube, and owing to the position of this opening and to the shape of the inner tube, the air may be deflected directly against the window sash, preventing any drafts in the room. This inner tube is fitted loosely in the outer tube so that it maybe withdrawn longitudinally therefrom for cle aning, or for any other purpose, without disturbing that part of the ventilator secured to the sash.

In the construction shown in Fig. 6, the in ner .end of the member D is extended inwardly, forming a rectangular member D in side of the sash. The upper portion thereof is cut away as shown at d To close this opening or regulate the extent thereof, I provide a pivoted damper D, the free end of the damper being toward the sash, so that when the air comes through the member D and strikesthe damper, it will be deflected against the sash and prevent drafts in the room.

In the construction shown in Figs. 7 and 8, the member 'D is substantially the same shape and construction as that shown in Fig. 6. Instead of providing one opening 11 therein, I provide a series of-such openings, and instead of having a pivoted damper, I provide a sliding damper D with a series of openings d therein, which are so arranged that when this damper or valv e is moved longitudinally in one direction, the openings (2 d register to permit the air to pass into the room, and when moved in another direction, do not register and the openings are cut off, excluding the air. Of course, it is understood that this valve can be moved to any degree from open to closed to regulate the amount of air to be admitted.

While I have shown my ventilator as applied to the lower rail of a lower window sash, it is to be understood that it may be readily applied to an upper sash.

It is also to be understood that the use of this ventilator is not confined to a window sash, but may be used in various other places where it is necessary to provide ventilation. For example, in the walls of a building, in vaults, on cars, or in any other place desired.

It is also to be understood that I do not intend to confine myself to the exact construction herein shown, as obvious changes may be made without departing from the spirit of my invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a ventilator, an elongated hollow member adapted to fit in an elongated opening in a rail of a window sash, said member being open at one of its longer sides for the entry of air and at another side for the exit of air, a second hollow elongated member connected to and communicating with the first member at the side having the exit opening and extending substantially the full length of the first member, said second member having an opening therein for the exit of air, and means for controlling the extent of said opening and causing the air to strike the sash at an angle as it leaves the second member, as and for the purpose set forth.

2. In a ventilator, an elongated hollow member adapted to fit into an elongated opening in a rail of a window sash, said mem ber being open at one of its longer sides for the entry of air, and at another of its long sides for the exit of air, a tube secured to said member at the side having the exit opening and extending substantially the full length thereof and connected therewith, said tube having an opening in the wall thereof for the exit of air, another tube telescopically fitted into the first tube and having in its wall an opening which registers with the opening in the wall of the outer tube, one

end of the inner tube being closed and the other end of the inner or outer tube being also closed so that air can pass out of the tubes only through the opening in the wall of the two tubes, said inner tube being adapted to turn axially in the outer tube to control the extent of opening in the wall of said outer tube.

3. In a ventilator, an elongated hollow rectangular member adapted to fit into a similar opening in a rail of a window sash, said member being open at one of its long sides for the entry of air and at its opposite side for the exit of air, a tube secured to said member at theside having the exit opening therein and extending substantially the full length thereof and communicating therewith, said tube being closed at one end and open at the other and having an opening in the wall thereof for the exit of air, and so located that the air upon leaving the said tube will strike the sash at an angle, another tube telescopically fitted into the first tube and extent of opening in the wall of the outer 1 having in its wall an opening which registers with the opening in the wall of the outer tube and the opening in said member, the outer end of the inner tube being closed so that air can pass out of the tube only through the walls of the two tubes, said innertube being In witness whereof I have hereunto set my to hand at the city of New York, county of New York, and State of New York, this 25th day of June, 1906.

WESLEY BIGELOW.

In presence of F. R. RICHARDS,

JOHN J. RANAGAN.

adapted to be turned axially to control the tube and the exit opening in said member. 

